n | a(n) |
---|---|
0 | 0 |
1 | 3 |
2 | 45 |
3 | 441 |
4 | 3825 |
5 | 31713 |
6 | 257985 |
7 | 2080641 |
8 | 16711425 |
9 | 133955073 |
10 | 1072692225 |
11 | 8585738241 |
12 | 68702695425 |
13 | 549688696833 |
14 | 4397778059265 |
15 | 35183298314241 |
16 | 281470681677825 |
17 | 2251782633684993 |
18 | 18014329789743105 |
19 | 144114913197424641 |
20 | 1152920405094170625 |
[0,3,45,441,3825,31713,257985,2080641,16711425, 133955073,1072692225,8585738241,68702695425, 549688696833,4397778059265,35183298314241, 281470681677825,2251782633684993, 18014329789743105,144114913197424641, 1152920405094170625] |